Question
A second grader knows that 34 is 3 tens and 4 ones. Then you ask, "How else could you represent 34? For example, it would be 2 tens and ______ ones." The student cannot answer this question. What hint would you give the student?
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Study Figure $24.19 .$ The four rows of white blocks at the top represent the numbers $1-10 .$ The bottom row is a placeholder and the top three rows are the actual counting. Explain the "rule" for the kind of counting shown here. (For example, how do three white blocks represent the number 7 ?
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